Set of key buttons for a handset



FIG. 1 is a front view of a set of key buttons for a handset showing ournew design; and,

FIG. 2 is a perspective front view thereof.

The broken line showing the remainder of the handset in FIGS. 1 and 2 isfor illustrative purposes only and forms no part of the claimed design.

The ornamental design for a set of key buttons for a handset, as shownand described.